diff --git a/features/device-mgt/org.wso2.carbon.device.mgt.basics.feature/src/main/resources/dbscripts/cdm/postgresql.sql b/features/device-mgt/org.wso2.carbon.device.mgt.basics.feature/src/main/resources/dbscripts/cdm/postgresql.sql
index f52bed8d00..c527642e8c 100644
--- a/features/device-mgt/org.wso2.carbon.device.mgt.basics.feature/src/main/resources/dbscripts/cdm/postgresql.sql
+++ b/features/device-mgt/org.wso2.carbon.device.mgt.basics.feature/src/main/resources/dbscripts/cdm/postgresql.sql
@@ -490,26 +490,31 @@ CREATE TABLE IF NOT EXISTS DM_DEVICE_LOCATION (
     ON DELETE NO ACTION
     ON UPDATE NO ACTION
 );
+CREATE INDEX DM_DEVICE_LOCATION_GEO_hashx ON DM_DEVICE_LOCATION(GEO_HASH ASC);
 
-CREATE TABLE IF NOT EXISTS DM_DEVICE_HISTORY_LAST_SEVEN_DAYS
-(
-    ID               BIGSERIAL        NOT NULL PRIMARY KEY,
-    DEVICE_ID        INT              NOT NULL,
-    DEVICE_ID_NAME   VARCHAR(255)     NOT NULL,
-    TENANT_ID        INT              NOT NULL,
-    DEVICE_TYPE_NAME VARCHAR(45)      NOT NULL,
-    LATITUDE         DOUBLE PRECISION NULL,
-    LONGITUDE        DOUBLE PRECISION NULL,
-    SPEED            FLOAT            NULL,
-    HEADING          FLOAT            NULL,
-    TIMESTAMP        BIGINT(15)       NOT NULL,
-    GEO_HASH         VARCHAR(45)      NULL,
-    DEVICE_OWNER     VARCHAR(45)      NULL,
-    DEVICE_ALTITUDE  DOUBLE PRECISION NULL,
-    DISTANCE         DOUBLE PRECISION NULL,
-);
 
-CREATE INDEX DM_DEVICE_LOCATION_GEO_hashx ON DM_DEVICE_LOCATION(GEO_HASH ASC);
+CREATE TABLE IF NOT EXISTS DM_DEVICE_HISTORY_LAST_SEVEN_DAYS (
+    ID BIGSERIAL NOT NULL PRIMARY KEY,
+    DEVICE_ID INTEGER NOT NULL,
+    DEVICE_ID_NAME VARCHAR(255) NOT NULL,
+    TENANT_ID INTEGER NOT NULL,
+    DEVICE_TYPE_NAME VARCHAR(45) NOT NULL,
+    LATITUDE DOUBLE PRECISION NULL,
+    LONGITUDE DOUBLE PRECISION NULL,
+    SPEED FLOAT NULL,
+    HEADING FLOAT NULL,
+    TIMESTAMP BIGINT NOT NULL,
+    GEO_HASH VARCHAR(45) NULL,
+    DEVICE_OWNER VARCHAR(45) NULL,
+    DEVICE_ALTITUDE DOUBLE PRECISION NULL,
+    DISTANCE DOUBLE PRECISION NULL,
+  CONSTRAINT DM_DEVICE_HISTORY_LAST_SEVEN_DAYS
+    FOREIGN KEY (DEVICE_ID)
+    REFERENCES DM_DEVICE (ID)
+    ON DELETE NO ACTION
+    ON UPDATE NO ACTION
+);
+CREATE INDEX DM_DEVICE_HISTORY_LAST_SEVEN_DAYS_GEO_hashx ON DM_DEVICE_HISTORY_LAST_SEVEN_DAYS(GEO_HASH ASC);
 
 CREATE TABLE IF NOT EXISTS DM_DEVICE_DETAIL (
   ID BIGSERIAL NOT NULL PRIMARY KEY,
@@ -543,20 +548,19 @@ CREATE TABLE IF NOT EXISTS DM_DEVICE_DETAIL (
     ON UPDATE NO ACTION
 );
 
-CREATE SEQUENCE `DM_DEVICE_TYPE_PLATFORM`_seq;
-
-CREATE TABLE IF NOT EXISTS `DM_DEVICE_TYPE_PLATFORM` (
-  ID INT NOT NULL DEFAULT NEXTVAL ('`DM_DEVICE_TYPE_PLATFORM`_seq'),
+CREATE TABLE IF NOT EXISTS DM_DEVICE_TYPE_PLATFORM (
+  ID BIGSERIAL NOT NULL PRIMARY KEY,
   DEVICE_TYPE_ID INT DEFAULT 0,
   VERSION_NAME VARCHAR(100) NULL,
   VERSION_STATUS VARCHAR(100) DEFAULT 'ACTIVE',
-  PRIMARY KEY (ID),
-  CONSTRAINT DM_DEVICE_TYPE_DM_DEVICE_TYPE_PLATFORM_MAPPING FOREIGN KEY (DEVICE_TYPE_ID)
-  REFERENCES DM_DEVICE_TYPE (ID)
-    ON DELETE CASCADE
-    ON UPDATE CASCADE,
-  CONSTRAINT device_type_version_uk UNIQUE  (DEVICE_TYPE_ID, VERSION_NAME)
-  )
+  CONSTRAINT FK_DM_DEVICE_TYPE_PLATFORM_MAPPING
+    FOREIGN KEY (DEVICE_TYPE_ID)
+    REFERENCES DM_DEVICE_TYPE (ID)
+    ON DELETE NO ACTION
+    ON UPDATE NO ACTION,
+  CONSTRAINT device_type_version_uk
+    UNIQUE (DEVICE_TYPE_ID, VERSION_NAME)
+);
 
 -- DASHBOARD RELATED VIEWS --